Test Running; Air Purging - Kelvinator KSV25CRH Installation Manual

Test running

Air purging

Air and other foreign matter in the refrigerant circuit causes
abnormal pressure rise, which may result in equipment damage
and even injury. Therefore, the indoor unit and tubing between
the indoor and outdoor unit must be leak tested and evacuated to
remove any non condensable and moisture from the system.
NOTE: Any brazed connections must be completed before
evacuation and prior to release of any refrigerant into the
refrigeration system. Low temperature solder must not be used.
Air purging with vacuum pump
• Preparation
Check that each tube (both liquid and gas side tubes) between
the indoor and outdoor units have been properly connected
and all wiring for the test run has been completed. Remove
the service valve caps from both the gas and the liquid side on
the outdoor unit. Note that both the liquid and the gas side
service valves on the outdoor unit are kept closed at this stage.
• Pipe length and refrigerant amount:
Standard Maximum
Model length length
(m) (m)
KSV25CRH
KSV25HRH
KSD25HRH 5
KSV25HWH
KSD25HWH
KSV35CRH
KSV35HRH
KSD35HRH 5
KSV35HWH
KSD35HWH
KSV50HRH
KSD50HRH
KSV50HWH 5
KSD50HWH
KSV71CRH
KSV71HRH
KSD71HRH 5
KSV71HWH
KSD71HWH
KSV90HRH
KSD90HRH
5
KSV90HWH
KSD90HWH
Minimum length: 3m
Additional refrigerant required for pipe length greater than
standard 5m installation can be calculated using the following
equation:
M = (L - 5) x A
Where:
M = Mass of additional refrigerant (g)
L = Actual installed connecting pipe length (m)
A = Additional refrigerant required per meter of connecting pipe
(g/m) (refer to the above table)
Maximum Additonal
height refrigerant
(m) (g/m)
25 10 15
25 10 15
30 20 15
50 25 30
50 25 30
caution
W ARNING
R32 is a mildly able refrigerant. Make sure that the area has
been made safe by having suitable ventilation and is free from
ignition sources before charging or releasing the charge of R32.
warning
W ARNING
If additional refrigerant charge is added, please check the
minimum indoor room size for the complete air conditioner
R32 charge has been checked and complied with against the
requirements of AS/NZS 60335.2.40
Kelvinator Air Conditioning Test running 15